See Also: helper cell(medicine)
Cell, helper(health)
T helper cell(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
helper(dictionary)
Helper T cells(health)
t4 helper lymphocyte(medicine)
helper viruses(medicine)
Helper phage(medicine)
helper virus(medicine)

crown glass (medicine) and Cell, helper (health)


crown glass (medicine)


crown glass


A compound of lime, potash, alumina, and silica; commonly used in lenses; has a low dispersion (52.2) relative to index of refraction (1.523).


Cell, helper (health)


A type of T cell that participates in the immune response by recognizing foreign antigens and secreting substances called cytokines that activate T and B cells. Helper cells fall into two main classes: those that activate Other T cells to achieve cellular inflammatory responses; and those that drive B cells to produce antibodies in the humoral immune response. These two classes of response are generally incompatible with one another and require coordination by substances called cytokines to promote one response while dampening the Other.